3.2 Electrical Features:
The POS-002 uses a microprocessor based measurement system. The polarization
tracking function is continuously monitored and fully automatic. There are no user
serviceable parts in the system, and no calibration is required.
The POS-002 re 12V/0.5A and
−
12V/0.15A DC power supplies. Due to the
presence of internal high voltages, the following safety precautions must be exercised
during operation.
•
The ground pin on the power cable must be connected to earth ground of the
power supply.
•
Never touch the boards inside the package without proper insulation and
grounding.
•
The POS-002 is not user serviceable and can be serviced only by factory-
authorized personnel.
The power and communication connections and pin definitions for the POS-002 are listed
below. Pin definitions and labels are also shown on the POS-002 overlay (see cover
picture or Figure 1). An RS-232 interface (using the special cable provided) can be used
for remote control operation. A 2-part cable is provided for power/communication
connections to the POS-002. The first section connects to the POS-002 module, and
includes the functions shown in the pin definition in Table 1: power, RS-232, and
external feedback signal input (for external feedback version POS-002). The second
section connects to the 3-pin connector on the first section, and has a DB9 connector on
the other side for RS-232 interface with a computer. Remote operation can be achieved
by using any program that supports the RS-232 communication protocol. A simple
LabView™ (National Instruments, www.ni.com) interface is provided for RS-232
control. RS-232 control commands are listed in Section 4.4.1, and Section 4.4.4 contains
a description of the control program.
Figure 4 POS-002 electrical/communication connector
1
10
Document #: GP-UM-POS-002-21
Page 9 of 30
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